1 Johns Hopkins Global Program for Pediatric Respiratory Sciences, Eudowood Division of Pediatric Respiratory Sciences, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD 21287, USA; Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. Electronic address: [email protected].
2 Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden; Institute for Global Health, University College London, London, UK.
3 Institute for Global Health, University College London, London, UK.
4 Centre for International Child Health, University of Melbourne, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC, Australia.
5 Physio Monitor, San Ramon, CA, USA.
6 Lifebox Foundation, London, UK.
7 Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.